Oscillating motor.



ANolafsigo. l' PATBNTED JULY 30,1907.

f H. W. M. E. YosT.

OSCILLATING MOTOR. APLIOATION FILED Arn.ao.19oe.

2 SHEETS-SHEET 1.

F'I G ATT'ORNEY.

rrrrnn sfra'rns HENRY w. YOs'T AND JOSEPH E. Yos'r, `Oir- SPRINGFIELD,OHIO,

ASSIGNORS TO YOSfl` GEARLESS MOTOR COMPANY, OF SPRINGFIELD, OHIO, AACOI?Alt'EhIERSFIIP.

Specification of Letters Patent.

Patentes July 30,1907.v

Application fusa sparso, 1906. saisi No. 314.385.

in Oscillating Motors, of which the following is. a. specification,reference being had therein to the accompanying drawings. This inventionrelates to oscillating motors, and more particularly to oscillatingmotors such as wat-er motors, adapted for use with a practicallyinelastic motor fluid. Our invention has for its object to provide a:simple, durable, inexpensive and eiiicieiit structure of this class,which will be compact and self contained.

To these ends our invention consists incertain novel features whiclrwewill now proceed to describe and will then particular-lypoint out intheclaims. In the accompanying drawings, Figure l is 'anelevation of amotor embodying our invention inlonelform';

Fig. 2 is a sectional view of the same, taken on the line o 'v of Fig..l and looking in the direction oi the arrows; Fig. 5-is asectionalview., takenon a plane corres lgunding ivith the line w w ofFig; 2 andlooking in th irec- 'ftion of 4the arrows; Fig. 4 is a similarview,taken on a planecorresponding with the line x at of Fig. 2 andlooking in the direction of the arrows; Fig. 5 is a sectional view,taken en the line y yoFig. 3 and looking inthe direction'of the arrows;and Fig. 6 is a sectional view,

taken on the line z z of Fig. 3 and looking in the direction of thearrows. 4

. In the said drawings, l represents an oscillating shaft, which may bethe shaft of a washing machine, for use in connection with which ourimproved motor is especially adapted. This shaft passes through themotor cylinder, which comprises a cylinder body portieri 2 and heads 3and 4. The cylinder body 2 is in the form of a plain annulus, andtherefore may be readily constructed from asection of pipe or'tubing.The heads'B 'and 4 are provided with marginal flanges 5, which lit4around the edges Of the body 2 so as to center the heads and body, andthe heads are connected by bolts 6, passing through lugs 7 on the headsand providedlwith nuts 8, by means of which the heads may be drawntowards each other and held firmly against the `ends of the cylin- .derbody 2. Each head has a stuling box for the passage of the shaft l, thesamey comprising an internally threaded sleeve or collar 9, formedintegrally with the head and surrounding a central aperture 'l0 in thehead,-

through which aperture the shalt passes. This sleeve or collar forms achamber to receive a packing ll, which is held in place and tightened npon the shalt by the usual gland l2. rlho head 3 'has formed integrallytherewith an inlet nozzle i3, threaded or otherwise adapted forconnection with a source ol supply oi water under pressure, a passage orport 14 conducting the water to the interior of the cylinder. A similarexj Vhaust nozzle 15 is formed in one lpiece with the head 4,

and communicates with the interior of the cylinder through aport orpassage 1G.

A portion of the interior oi the cylinder is divided.` Off' to form avalve chest comprising an iniet chamber 4cornmunicating with the port 14and an outlet chamber communicating with the port l Toprovide a simple.'

and effective construction for this portionvofthe motor, we employ acasting comprising a diaphragm 17 which extends across the cylinder inthe plane oi a`cliord ofthe circle of the cylinder section at rightangles toits bisectig'ra'dius. This diaphragm is secured atfits ends tothe cylinder body 2 by means .of screws 18, as shown in Figs. 3 and 4,its lateral margins tting against the`heads, `.While its centralportion'is provided with an inwardly extending abutment 19, which litsagainst the shaft 1 an is provided with a recess containinga packing 20to make a water-tight joint between said4 abutment and the shaft.

The diaphragm or partition la7 'is provided on its other or outer si( ewith an itgml iiange 2l, arranged at right angles to the body ofsaiddiaphragm, 'extending thence outward soneto-tht ,against thecylinderbody 2, and dividing the s ace .h c Weenv the diaphragm 17 andsaidcylinder bod )into aai inlet or pressure chambcr 22 and an outllgtlor exhaust Ichamber 23. The

portion of the diaphragm '17, which lies inward fromy the inlet chamber22 is provided with two ports or expenings 24, arranged on oppositesides o the abutment'li), and in these 'ports fit and in cross section,of the inlet valves 'll`he valves 26 and 27 seats 28 to receive saidvalves.

are connected to thc vonds ol' a rocker arm or vibrating lever 29, whichlever is centrally pivoted to a bearing 'stud 30 projecting outwardronrthc llangeor partition 2l, and preferably loi-mcd in one piecetherewith, the lcvcr 29 boing 'provided with a central sleeve 31 whichslips'over the bearing stud 30, so as to be readilyre-'-niovablotherefrom when thehcad 3 isrelnoved to give access to theinterior ofthojnlct chamber 22. The connccl ion bctwccn the valves 2Gand 27 and the ends of the lover 29 is effected by providing the lcvcrwith.

slide the stenis'25y, crucilorrriA 2G and 27, the outer lace of thediaphragm .l7 being provided with valve the lover to rock relatively tothe ss A t the diaphragm i7 is provided with exhaust ports 35, havingvalve seals lt at their inner ends to receive the exhaust valve?l 37 and3S. which lie on the inner side of said diaphragm, and which have stems3l), erucilorm in cross section, which tit and slide in the ports 35.The partition 2l is provided on this side also with a central bearingstud 40, on which [its a central bearingr sleeve 4l on a rocker arm orvihral ing7 lever 42, the ends oi which are connected to the exhaustvalves 37 and 23S yin a manner similar to the connection ol thelever.2.) with the inlet valves 2U and 27. ln other words, the lever 42is provided at its ends with inwardly directed open mouth slots 43, andthe valve stems 39 are provided with redueed shanlrs fifi, looselyfitting said slots, and heads or enlargements 45 -to engage the lever.ln thiscase also it will be seen that the mouths of the slots 43 areinwardly directed, so that, by removing the cylinder head 4, the lever42 may be drawn out hy simply moving it; in a direction parallel withthe axis oi' the shaft l, without displacing the valves.

The shalt] is provided with an oseillating'piston 46, in the l'orm ol aradial blade secured to the shaft r, at its inner end and Iittingrbetween the cylinder heads, shaitland cylinder body 2. ln order to makeWater-tight joints between the piston and Cylinder, there is secured toeach side of said piston. a packing sheet'47, preferably constructed 'oileather and of an area somewhat, lgreater than that ol' the piston, sothat its margin 4S is tree and bent outward so as to be held against thecylinder walls by the pressure ol' the water. These packing;r sheets areheld in position hy clamping plates 49, suitably secured to the body olthe piston on each side thereof and clamping the packing sheets againstsaid body.

Each valve -has that end thereof which lies in the path ollthe piston 4Gprovided with a eoiled spring 50, seeured to said valve and so arrangedas to be squarely struck by the piston and compressed thereby bciore theshitting ol the valves finally oeeurs4 'lhese springs are preferablysecured to studs 5l, projecting inward from the valves or their stenis,and the springs are prei'- erably conical in i'orm or ol increasingradius toward their tree ends. l

The operation ol' the motor will be readily understood from thepreceding7 descr-nation. Assuming that the parts are in the positionshown, the water under pressure, enteringI the inlet, chamber throughthe inlet 'nozzle and port 14, is admitted to the interior of theworking,r portion 52 ol the cylinder through the port 24 of the inletvalve 2li, the other inlet, `valve 27 being held to its 4seat by thepressure of the water against it so as to close the inlet portwhich it,controls. The pressure thus exerted on on'e side ol' the piston 46 movesthe same in the direction ol' the arrows in Figs. 3 and 4, the water onthe other side ol' the piston escaping through the port controlled bythe open exhaust valve 37, the other exhaust valve 38 being heldelosedby the water pressure. Movement, ot' the piston inthis dire@ tioncontinues until it comes into contact with the springs 50 oi the yinletvalve 27 and exhaust valve 37. Movement ol' the former valve is resistedby the water pressme on its other side and movement of the latter valveis resistcd'by the Water pressure on the other exhaust, valve'SS, which,beingT connected with the valve 37 through. the lever 42, resists theclosing oi thiy valve 37. The springs 50 are therefore compressed, whilethe valves 27 and 37 remain stationary andthe piston completes itsstroke. The coi'npressien ot the springs continues until the pistoncomes into Contact with the studs 5l, and, by its engagement with them,

' will start the valves upon their shifting movement,

positively lil'ting from their seats the valves which are held there bythe water pressure. As soon as these valves have heen thus started andrelieved of the Water pressure. resistance, the springs act to shil'tthe valves the remainder oi' the way, the inlet `fvalve 27 opening andthe exhaust valve'37 closing, ywhile the inlet 'valve 26 is closed andthe exhaust valve S8 is opened through the medium ol' the connectinglevers 2t) and 42. Water under pressure is thus admitted to the otherside of the piston, which thereupon reverses its direction of travel andmoves back tothe position shown in the ,lrawizgs, thereby again openingthe inlet valve 2G and exhaust valve 37 and closing the inlet valve 27and exhaust valve 3S, whereupon the same cycle ot operation iscontinued. It will be understood in this connection that the springs arealways compressed to the same extent, to wit, to an extent justsutlicient to enahle the piston to come into Contact with the studs 5]..This prevents excessive compression of the springs, which would occurwhen the motor is carrying;r a heavy load il' the springs werecompressed Sutheiently to overcome the pressure ol the water against thevalves. Such excessive compression tends to rapidly crystalli/,e thesprings and correspomlingly slierten their lives. 4 The construction'which we have devised makes the compression 0l the springs unil'ormunder all loadsrand avoids excessive'compression, thereby increasing thelife ol` the springs,

From. an examination of Fig. 5 of the drawings, it will he seen that therelative position of the inlet and outlet valves is such that the formerwill be struck and nnseated by the piston before the latter is struckand its shil'tingniovement `started. ln said ligure ol' the drawings thedil'tcrenee has been slightly exaggerated to make it apparent on thesmall scale necessarily employed, and it will he seen that the stud 5lol' the inlet valve 2G extends somewhat further inward than the stud 5l.of the exhaust valve 38. The same is trueof the valves 27 and 37, theinlet valve stud extending somewhat in advance of the exhaust valvestud. It follows from thiseonstruction that the inlet valve starts toshift somewhat before lthe exhaust valve, the inlet valve leadingsomewhat in this movement. This allows v'ater under pressure to enterthrough the opening inlet valve somewhat before the exhaust valvestarts, admitting water' under pressure on that side ol the piston, sothat it will assist the spring on the outlet valve in moving the outletvalve quickly to its seat. v

'ihis arrangement also avoids the possibility of the outlet valve,leading in the sluiting movement, which leading might result, trom somevariation in the resistance of the, springs and would he objectionable.

and described, for obvious modifications will occur to a person skilledin the art:

Having thus fully described my invention, what l claim as new and desireto secure by Letters Patent,

iszf valve casting located within the cylinder and forming inlet andexhaust chambers, each chamber having ports` opening into the maincylinder on opposite sides of the piston, valves controlling said portsand provided with springs arranged in the path of the piston, and rockerarms centrally pivoted in the respective valve chambers and connected tothe corresponding valves to move them in opposite directions,substantially as described.

2, An oscillating motor comprising a shaft provided with an oscillatingypiston, a cylinder in which said pistony operates, a diaphragm extendingchordwise across said cylinder and provided with valve openings andvalves, a`

partition flange extending at right angles to said diaphragm anddividing the space between it and the cylinder body into inlet andexhaust chambers, bearing studs supported within said chambers, rockerarms pivotally mounted on said studs and provided at their inner end swith open mouth slots to engage ,the valves,

Il. An oscillating motor comprising a shaft provided with an oscillatingpiston, a cylinder in which said piston operates, said cylinder havingan annular body and removable heads, a diaphragm extending chordwiseacross the cylinder body and provided with valve openings and valves, apartition flange extending at right angles to 1. An oscillating motorcomprisingr a cylinder, an oscillating shaft provided with a pistontraveling` therein, a

said diaphragm and dividing* the space between it and the cylinder body'into inlet and exhaust chambers, bearing studs extendingr outward fromsaid partition flange into the chamber, and rocker arms constructed toremovably slip over said bearing studs and provided at their ends withopen-mouthed slots `to engage the valves, substantially as described.

'4. An oscillating motor comprising a shaft having an oscillatingpiston, a cylinder having an annular or tubular body and removableheads, an integral valve chamber casting comprising a diaphragmextending chordwise across the cylinder, an abutment extendingtransversely of said diaphragm on'one side thereof and' fitting againstthe shaft, a partition flange at right angles to said diaphragm andabutment on the other side of." said diaphragm, said partition angeextending to the body and forming inlet and exhaust chambers on oppositesides thereof, and bearing'studs extending 'outward from said partitionange across the valve chambers, said diaphragm being provided with valveopenings lbetween the main body of the cylindevI and each valve chamberon opposite sides of the abutment, valves controlling saidvalve openingsand provided with springs arranged in the path of the piston, and rockerarms having central sleeves to slip over the bearing studs andopen-mouthed slots at their 'ends to engage the valves, substantially asdescribed.

5. In an oscillatingr motor of the character described, a valve chamber,one side whereof is removable, in combination with two valves, eachcomprising a valve proper, a stem cruciform cross section, a reducedshank, and an enlarged head, and a rocker arm removably pivoted betweenthe valves and having open-mouthed slots at its ends to loosely engagethe Shanks of the valves, sub'stantially as described.

In testimony whereof, We aix our signatures in-pres ence of twowitnesses.

' HENRY W. YOST. JOSEPH E. YOST.

l Witnesses z IRVINE MILLER, E. O. HAGAN.

